Door lock



FIG. 1 is a perspective view of a first embodiment of a door lock, showing my design;

FIG. 2 is a front elevation view of the first embodiment of the door lock;

FIG. 3 is a left side elevation view of the door lock, wherein a right side elevation view of the door lock is a mirror image of the left side elevation view thereof;

FIG. 4 is a top plan view of the first embodiment of the door lock;

FIG. 5 is a bottom plan view of the first embodiment of the door lock;

FIG. 6 is a perspective view of a second embodiment of the door lock;

FIG. 7 is a front elevation view of the second embodiment of the door lock;

FIG. 8 is a left side elevation view of the second embodiment of the door lock, wherein a right side elevation view of the second embodiment of the door lock is a mirror image of the left side elevation view thereof;

FIG. 9 is a top plan view of the second embodiment of the door lock; and,

FIG. 10 is a bottom plan view of the second embodiment of the door lock.

The broken lines depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a door lock, as shown and described. 